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. 2022 Aug 8;12:13530. doi: 10.1038/s41598-022-16906-9

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© The Author(s) 2022, corrected publication 2024

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Planimetry of the cave and cave cross section. Legend: 1 Cross section; 2 Cave ceiling limit; 3 Cliff; 4 Sea level; 5 Bedrock; 6 Sedimentary cave filling; 7 Sections location and orientation; 8 Lithophaga burrows (a). Overall view of the cave from the northern side with the location of the described sections (b). The two tidal notches (tn1 and tn2) carved into the bedrock and observable on the northern side of the cave, originally buried by the sedimentary succession (c). Planimetry modified from 17 by P. Pieruccini and L. Forti. Artwork and photos by L. Forti and P. Pieruccini.